Abstract: An information processing device includes a memory and circuitry coupled to the memory and configured to determine, when execution of a process on data is canceled in accordance with a cancellation request from a source that has requested the process, whether the process is to be executed and whether a result of executing the process is to be stored, based on a processing rate of the process by the information processing device.

Abstract: A method of causing a computer to execute: classifying, based on topology for indicating connection relationships among a data-provision apparatus, distribution-destination apparatuses corresponding to distribution destinations of distribution targets, and relay apparatuses configured to relay communications between the data-provision apparatus and the distribution-destination apparatuses, the mutual distribution-destination apparatuses; identifying a first distribution-destination apparatus having a highest communication speed of a directly connected link among the distribution-destination apparatuses belonging to the group; and creating a distribution schedule of the data in a manner that the data is transmitted from the data-provision apparatus to the first distribution-destination apparatus in the same group, and next, the data is transmitted from the first distribution-destination apparatus to a second distribution-destination apparatus other than the first distribution-destination apparatus in the group

Abstract: A state management system includes an information processing apparatus including a first memory, and a first processor coupled to the first memory and the first processor configured to execute processing, and a management apparatus including a second memory, and a second processor coupled to the second memory and the second processor configured to predict a completion time of the processing in the information processing apparatus in accordance with information transmitted from the information processing apparatus wherein the first processor is configured to change, in accordance with a completion rate of the processing, a threshold for a difference between an actual state of the information processing apparatus and a state of the information processing apparatus recognized by the management apparatus, and transmit the information to the management apparatus when the difference exceeds the threshold.

Abstract: An information processing device includes a memory and circuitry coupled to the memory and configured to determine, when execution of a process on data is canceled in accordance with a cancellation request from a source that has requested the process, whether the process is to be executed and whether a result of executing the process is to be stored, based on a processing rate of the process by the information processing device.

Abstract: A data transfer method includes: executing a process that stores sensor information including duplicate degrees and position information, the duplicate degrees indicating an amount of computers as transmission sources of inhibit signals received by the first computer; executing a process that transmits the inhibit signal including the duplicate degree in the sensor information to a computer that is present in a position to which direct communication via the short-distance radio communication is possible; executing a process that stores the duplicate degree in the inhibit signal, associates the duplicate degree with the transmission source of the inhibit signal, and increases the duplicate degree in the sensor information; and executing a process that transmits the position information in the sensor information to the management device in a case where the duplicate degree in the sensor information is higher than the duplicate degree associated with the transmission source of the inhibit signal.

Abstract: A data transfer method includes: executing a process that stores sensor information including duplicate degrees and position information, the duplicate degrees indicating an amount of computers as transmission sources of inhibit signals received by the first computer; executing a process that transmits the inhibit signal including the duplicate degree in the sensor information to a computer that is present in a position to which direct communication via the short-distance radio communication is possible; executing a process that stores the duplicate degree in the inhibit signal, associates the duplicate degree with the transmission source of the inhibit signal, and increases the duplicate degree in the sensor information; and executing a process that transmits the position information in the sensor information to the management device in a case where the duplicate degree in the sensor information is higher than the duplicate degree associated with the transmission source of the inhibit signal.

Abstract: A method of causing a computer to execute: classifying, based on topology for indicating connection relationships among a data-provision apparatus, distribution-destination apparatuses corresponding to distribution destinations of distribution targets, and relay apparatuses configured to relay communications between the data-provision apparatus and the distribution-destination apparatuses, the mutual distribution-destination apparatuses; identifying a first distribution-destination apparatus having a highest communication speed of a directly connected link among the distribution-destination apparatuses belonging to the group; and creating a distribution schedule of the data in a manner that the data is transmitted from the data-provision apparatus to the first distribution-destination apparatus in the same group, and next, the data is transmitted from the first distribution-destination apparatus to a second distribution-destination apparatus other than the first distribution-destination apparatus in the group

Abstract: A method for acquiring a packet of a monitoring target, the method includes, forming, by a control unit, a mirror path for arriving a mirror packet, of which a origin or a destination of a transmission is a virtual machine for the monitoring target, at a monitoring device which monitors the mirror packet through one or more relay devices, detecting, by the control unit, an occupation when a packet except the packet, of which the origin or the destination of a transmission is the virtual machine for the monitoring target, does not pass based on history information of the packet which passes the relay device, accumulating, by the monitoring device, the mirror packet which passes the relay device, and extracting, by the monitoring device, the mirror packet which arrived at in the occupation as the packet for the monitoring target.

Abstract: A method for acquiring a packet of a monitoring target, the method includes, forming, by a control unit, a mirror path for arriving a mirror packet, of which a origin or a destination of a transmission is a virtual machine for the monitoring target, at a monitoring device which monitors the mirror packet through one or more relay devices, detecting, by the control unit, an occupation when a packet except the packet, of which the origin or the destination of a transmission is the virtual machine for the monitoring target, does not pass based on history information of the packet which passes the relay device, accumulating, by the monitoring device, the mirror packet which passes the relay device, and extracting, by the monitoring device, the mirror packet which arrived at in the occupation as the packet for the monitoring target.

Abstract: A determination apparatus includes a processor and a storage unit. The processor acquires through a communication network a request packet transmitted from a client device to a server device group or a reply packet transmitted from the server device group to the client device. The server device group includes a first server device and one or more second server devices. The first server device is connected to the client device through the communication network. The storage unit stores configuration information for determining a source of the acquired reply packet. The processor determines whether the source of the acquired reply packet is the first server device or one of the second server devices on the basis of the configuration information stored in the storage unit.

Abstract: A method of measuring packet loss rate and device thereof, includes intermittently capturing packets during a session, counting a capture success number indicating a number of the packets captured in every period of a time for capturing the packets, and a capturable number indicating a possible number of the packets to be captured during the period of time without loss, calculating a loss rate indicating a rate of losing the packets, according to the capture success number and the capturable number for every period of time and correcting the loss rate, by the measuring device, so that the loss rate gets larger accordingly as average of capturable numbers of respective periods of time is smaller.

Abstract: A method for judging delivery status of a push signal includes: receiving packets flowing in a specific session between a transmission source and transmission destination at an arbitrary point on a route of the specific session, and storing the received packets into a storage device, wherein the packets include voice packets and non-voice packets representing the push signal; judging based on sequence numbers included in the received packets stored in the storage device, whether or not packet loss has occurred in the specific session; and upon detecting that the packet loss has occurred, judging, according to status of the packet loss and predetermined characteristic of the non-voice packets, whether or not loss of the push signal has occurred.

Abstract: A system including a first apparatus including a first processor, a first storage device, and a first communication interface and a second apparatus including a second processor and a second communication interface is provided. The first processor measures traffic of data communicated via a predetermined communication path in each of a plurality of time ranges, stores the data communicated in each of the plurality of time ranges in the first storage device, and performs a control processing to cause the first communication interface to transmit the measured data traffic to the second apparatus, and when the second processor receives the measured data, the second processor performs control processing to cause the second communication interface to transmit to the first apparatus designation information designating one of the plurality of time ranges in which protection target data not to be deleted from the first storage device has been communicated.

Abstract: A system including a first apparatus including a first processor, a first storage device, and a first communication interface and a second apparatus including a second processor and a second communication interface is provided. The first processor measures traffic of data communicated via a predetermined communication path in each of a plurality of time ranges, stores the data communicated in each of the plurality of time ranges in the first storage device, and performs a control processing to cause the first communication interface to transmit the measured data traffic to the second apparatus, and when the second processor receives the measured data, the second processor performs control processing to cause the second communication interface to transmit to the first apparatus designation information designating one of the plurality of time ranges in which protection target data not to be deleted from the first storage device has been communicated.

Abstract: A data processing apparatus edits an actual data portion excluding a header from data transmitted by streaming transmission from a first information processing apparatus after start of streaming transmission. The data processing apparatus transmits edited actual data portion and header to a second information processing apparatus by streaming transmission. The second information processing apparatus reproduces the voice data or the animation data transmitted by streaming transmission. The actual data portion is edited so that the voice data or the animation data to be transmitted may be reproducible in the second information processing apparatus, and so that a program may become unexecutable even if it would be transmitted to the second information processing apparatus.

Abstract: A method executed by a packet analysis apparatus for analyzing packets including voice packets and non-voice packets includes: capturing packets in a specific session; storing the captured packets in a storage; screening the stored packets to count up a receipt count of voice packets; determining whether packet loss has occurred in the specific session; and determining whether loss packets are voice packets in accordance with received packets adjacent to the loss packets to count up a loss count of voice packets when the packet loss has occurred.

Abstract: A loss determining unit of a monitoring device calculates a receiving-time interval between a receiving time of data and the receiving time of immediately previous data. If the interval is a predetermined threshold or higher, the loss determining unit determines that “a loss is detected” and calculates the number of losses. If the number of losses is lower than the threshold, the loss determining unit determines that “no loss is detected”. A failure-section determining unit calculates the number of losses occurring in a first section. The failure-section determining unit calculates the number of losses occurring in a second section. If the loss is detected in the first section, the failure-section determining unit determines that a failure occurs in the first section. If the loss is detected in the second section, the failure-section determining unit determines that a failure occurs in the second section.

Abstract: A sharing control processing unit controls sharing of capture of packets among measuring devices connected to the same network. An aggregating unit collects the captured packets. Each measuring device notifies the sharing control processing unit of a state about its capture. The sharing control processing unit determines which measuring device is to start/stop the capture, according to a predetermined rule and the notified state. When determining that the capture is to be switched from a first measuring device to a second measuring device, the sharing control processing unit instructs the second measuring device to start the capture. After receiving a notification that the second measuring device has actually captured a packet(s), the sharing control processing unit instructs the first measuring device to stop the capture. The aggregating unit identifies a duplicate packet(s) double captured by the first and second measuring devices.

Abstract: An apparatus to collect information about network failure includes: a normal mode packet assembly unit to assemble a transmission packet from transmission data output from an application in a normal mode being a procedure used when a transmission process is performed by specified communication protocol; a special mode packet assembly unit to assemble the transmission packet from the transmission data in a special mode being a procedure in which a procedure for collecting failure information is embedded into the procedure used when a transmission process is performed by the specified communication protocol; a switching control unit to activate the normal mode packet assembly unit or the special mode packet assembly unit selectively; and a response analysis unit to collect failure information according to a behavior of the response to the transmission packet transmitted from the special mode packet assembly unit.

Abstract: A communication conditions determination method, a communication conditions determination system, and a determination apparatus are provided in which the conditions of communication which is performed through a plurality of communication networks are determined without setting up a special apparatus on all the communication networks and without increasing the existing traffic. In a first communication network 100 and a second communication network 200 which are connected by a first connection apparatus 1 such as a router, a determination is made as to whether the source of a packet passed through the second communication network 200 is the first connection apparatus 1 or an apparatus other than the first connection apparatus 1. Packets whose respective sources are the first connection apparatus 1 and packets whose respective sources are an apparatus other than the first connection apparatus 1 are individually summarized. By comparing summarized results, the communication conditions are determined.